{"affected":[{"defaultStatus":"unaffected","product":"MongoDB Server","source":"CNA: mongodb","vendor":"MongoDB","versions":[{"lessThan":"9.0.7","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThan":"8.3.16","status":"affected","version":"8.3.0","versionType":"semver"},{"lessThan":"8.0.37","status":"affected","version":"8.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-120814","cwes":["CWE-250"],"description":"An improper privilege management issue in the sharding subsystem of MongoDB Server may allow a user holding certain shard-level administrative privileges to cause persisted internal coordination state to be reprocessed with elevated internal authority. Because that state is trusted rather than re-validated, operations may be carried out beyond the user's authorized scope, including changes to cluster-wide security configuration. Successful triggering this issue requires an authenticated session directly against a cluster member and can result in unauthorized access to and modification of data across the cluster.","epss":{"date":"2026-11-13","percentile":0.30813,"score":0.00365},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: mongodb","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.2,"severity":"high","source":"CNA: mongodb","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":7.5,"severity":"high","source":"NVD: cna@mongodb.com","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.2,"severity":"high","source":"NVD: cna@mongodb.com","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794600947198,"publishedAt":1794341533822,"references":[{"source":"CNA: mongodb","tags":[],"url":"https://jira.mongodb.org/browse/SERVER-133600"},{"source":"cna@mongodb.com","tags":[],"url":"https://jira.mongodb.org/browse/SERVER-133600"}],"remediation":[],"revision":"a215bcf80882d98cef208bbf6dcc411b8a35021b631790a50ed245d0ed532e7a","sources":[{"modifiedAt":1794600947198,"name":"CNA: mongodb","retrievedAt":1794604133809,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120814"},{"modifiedAt":1794348539707,"name":"NVD","retrievedAt":1794357082583,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120814"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794604160325,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-120814"}],"ssvc":{"assessedAt":1794600934501,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"MultiUpdateCoordinator state replay lets a shard administrator create a persistent cluster root user","updatedAt":1794604160325}